CGAL Function_vector example

CMakeLists.txt

cmake_minimum_required(VERSION 3.0)

project(mytest)

FIND_PACKAGE(CGAL REQUIRED)
find_package(Boost COMPONENTS thread REQUIRED)

ADD_EXECUTABLE(main test.cpp)
TARGET_LINK_LIBRARIES(
  main
  ${CGAL_LIBRARY}
  ${GMP_LIBRARIES}
  ${MPFR_LIBRARIES}
  ${Boost_LIBRARIES}
  )

test.cpp

#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>

#include <CGAL/Implicit_to_labeling_function_wrapper.h>

typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef K::FT FT;

class Function: public std::unary_function<K::Point_3, K::FT>
{
  public:
  typedef K::Point_3 Point; // necessary
  virtual K::FT operator()(K::Point_3 p) const {
    return 0.0;
  }
};

class MySphere: public Function
{
public:
  virtual K::FT operator()(K::Point_3 p) const
  {
    return 3.14;
  }
};

typedef CGAL::Implicit_multi_domain_to_labeling_function_wrapper<Function> Function_wrapper;
typedef Function_wrapper::Function_vector Function_vector;

int main()
{
  MySphere f1;

  Function_vector v;
  v.push_back(f1);

  std::cout << f1(CGAL::ORIGIN) << std::endl;
  std::cout << v[0](CGAL::ORIGIN) << std::endl;

  return 0;
}